// Copyright 2004-2010 Castle Project - http://www.castleproject.org/
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

namespace Fas.Tem.Runtime.Parser.Node
{
    using Context;

    public class ASTNotNode : SimpleNode
    {
        public ASTNotNode(int id) : base(id)
        {
        }

        public ASTNotNode(Parser p, int id) : base(p, id)
        {
        }

        /// <summary>
        /// Accept the visitor.
        /// </summary>
        public override object Accept(IParserVisitor visitor, object data)
        {
            return visitor.Visit(this, data);
        }

        public override bool Evaluate(IInternalContextAdapter context)
        {
            if (GetChild(0).Evaluate(context))
            {
                return false;
            }
            else
            {
                return true;
            }
        }

        public override object Value(IInternalContextAdapter context)
        {
            return (Evaluate(context) ? false : true);
        }
    }
}